Aligned diphenylalanine nanotube–silver nanoparticle templates for high‐sensitivity surface‐enhanced Raman scattering

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EarlyView Article

  • Published: Sep 15, 2017
  • Author: Sawsan Almohammed, Stefano Fedele, Brian J. Rodriguez, James H. Rice
  • Journal: Journal of Raman Spectroscopy

Abstract

Self‐assembly offers potential routes for large‐scale, rapid, and cost‐effective surface‐enhanced Raman scattering (SERS) substrate designs. Here, a highly sensitive SERS template is reported, which utilizes aligned diphenylalanine nanotubes to form a dense packing arrangement of plasmon‐active silver nanoparticles. The template is stable under high laser illumination with a power density of ~6.25 MW/cm2 in comparison to only silver nanoparticles and enables picomolar and femtomolar probe molecule concentrations to be probed, indicative of single‐molecule SERS detection.

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